Casselberry, FL Immigration Law Firms & Lawyers

I do not believe that there is any visa status that would meet your goal of having your sister remain in the US until her final days. Even if you are a US citizen and petition for her, the period of time for her to immigrate is is approximately 10 years, and during that period, U.S.C.I S. will not allow her to stay legally. Perhaps if your sister's end is soon approaching, the agency may be sympathetic and allow her extensions of her visiting visa, but if she is in fairly good health with no immediate end in sight, there would not appear to be anything within the law to allow her to stay until her final days.  

NO. If he has not been deported yet and his case is pending, you should talk to a criminal attorney for post conviction relief. If it is possession only, he might be able to adjust status if he is otherwise qualified. You will need an experience immigration attorney before you do anything and ASAP

Problem with the case is as you say, the acquisition of US citizenship upon the birth of your child abroad would depend (usually) on establishing the parent's physical presence in the US for a period of time before the child's birth. And without the cooperation of the parent that can be difficult. The answer to your question is that you do not need the parent's cooperation. However, finding the documentation which would establish the physical presence can be problematic without that cooperation. I know that this answer places you between a rock and a hard place, but these cases require evidence and without the evidence to support the claim of acquisition of US citizenship, the claim will often fail. Wish I could give you a better answer. Perhaps hiring a private investigator in the US to find available records may be helpful, but this will have a cost and of course no promise that the investigative services will lead to anything. Good luck.